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watchdog: iTCO_wdt: Export vendorsupport

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In preparation for making ->smi_res optional the iTCO_wdt driver needs
to know whether vendorsupport is being set to non-zero. For this reason
export the variable.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Mika Westerberg 2020-02-26 16:21:20 +03:00 committed by Wolfram Sang
parent 2c523b344d
commit 7ca6ee3890
2 changed files with 11 additions and 7 deletions
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2
drivers/watchdog/iTCO_vendor.h
View File

@ -1,10 +1,12 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* iTCO Vendor Specific Support hooks */
#ifdef CONFIG_ITCO_VENDOR_SUPPORT
extern int iTCO_vendorsupport;
extern void iTCO_vendor_pre_start(struct resource *, unsigned int);
extern void iTCO_vendor_pre_stop(struct resource *);
extern int iTCO_vendor_check_noreboot_on(void);
#else
#define iTCO_vendorsupport 0
#define iTCO_vendor_pre_start(acpibase, heartbeat) {}
#define iTCO_vendor_pre_stop(acpibase) {}
#define iTCO_vendor_check_noreboot_on() 1

16
drivers/watchdog/iTCO_vendor_support.c
View File

@ -39,8 +39,10 @@
/* Broken BIOS */
#define BROKEN_BIOS 911
static int vendorsupport;
module_param(vendorsupport, int, 0);
int iTCO_vendorsupport;
EXPORT_SYMBOL(iTCO_vendorsupport);
module_param_named(vendorsupport, iTCO_vendorsupport, int, 0);
MODULE_PARM_DESC(vendorsupport, "iTCO vendor specific support mode, default="
"0 (none), 1=SuperMicro Pent3, 911=Broken SMI BIOS");
@ -152,7 +154,7 @@ static void broken_bios_stop(struct resource *smires)
void iTCO_vendor_pre_start(struct resource *smires,
unsigned int heartbeat)
{
switch (vendorsupport) {
switch (iTCO_vendorsupport) {
case SUPERMICRO_OLD_BOARD:
supermicro_old_pre_start(smires);
break;
@ -165,7 +167,7 @@ EXPORT_SYMBOL(iTCO_vendor_pre_start);
void iTCO_vendor_pre_stop(struct resource *smires)
{
switch (vendorsupport) {
switch (iTCO_vendorsupport) {
case SUPERMICRO_OLD_BOARD:
supermicro_old_pre_stop(smires);
break;
@ -178,7 +180,7 @@ EXPORT_SYMBOL(iTCO_vendor_pre_stop);
int iTCO_vendor_check_noreboot_on(void)
{
switch (vendorsupport) {
switch (iTCO_vendorsupport) {
case SUPERMICRO_OLD_BOARD:
return 0;
default:
@ -189,13 +191,13 @@ EXPORT_SYMBOL(iTCO_vendor_check_noreboot_on);
static int __init iTCO_vendor_init_module(void)
{
if (vendorsupport == SUPERMICRO_NEW_BOARD) {
if (iTCO_vendorsupport == SUPERMICRO_NEW_BOARD) {
pr_warn("Option vendorsupport=%d is no longer supported, "
"please use the w83627hf_wdt driver instead\n",
SUPERMICRO_NEW_BOARD);
return -EINVAL;
}
pr_info("vendor-support=%d\n", vendorsupport);
pr_info("vendor-support=%d\n", iTCO_vendorsupport);
return 0;
}